Retaining walls

Overview

Retaining walls are often required on sloping sites to allow the construction of dwellings and other buildings. They can be constructed of timber, brick, concrete, rock or other materials and often need to support significant loads.

Prior to construction, you must apply for a building permit to construct:

  • a retaining wall one metre in height or over
  • a retaining wall less than one metre in height which is close to another building or the titles boundaries where there is risk of damage to the adjoining property

By obtaining a building permit, you will ensure that your retaining wall is designed and constructed correctly.

Preparing your application

1. Complete a Building Permit Application form

2. Obtain a Copy of the Title (including any covenants and Section 173 agreements)

3. Prepare drawings and documents to show:

  • the location of any existing buildings on the property
  • the proposed location of the retaining wall/s
  • details of the proposed construction methods and materials
  • a design and certification from a qualified structural engineer that demonstrates the design is structurally adequate
  • drainage design and infrastructure

4. For most applications, you will also need to provide:

  • Protection of adjoining properties documentation
  • Building cost of works
  • Builder’s registration details or Owner/Builder Certificate of Consent
  • Builder’s Warranty Insurance Certificate
  • Copy of the Town Planning Permit with endorsed plans (if applicable)

To find out more, contact our Building department on (03) 5422 0333.